People playground is very limited unless you wanna go towards the modding part of things or if you're really creative I guess you could do quite a lot in it, dunno much about TF2, and BeamNG is just a physics simulation, it's not the best "game" to have fun with. If I was going to recommend something I would say to get Project Zomboid if you haven't already played it, I realise this game has not very much in common with the other options however there are mods for it, so if you really wanted to change it up a bit then this would be fun.
